/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 03:40:13,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 03:40:13,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 03:40:13,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 03:40:13,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 03:40:13,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 03:40:13,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 03:40:13,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 03:40:13,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 03:40:13,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 03:40:13,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 03:40:13,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 03:40:13,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 03:40:13,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 03:40:13,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 03:40:13,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 03:40:13,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 03:40:13,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 03:40:13,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 03:40:13,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 03:40:13,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 03:40:13,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 03:40:13,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 03:40:13,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 03:40:13,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 03:40:13,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 03:40:13,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 03:40:13,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 03:40:13,874 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 03:40:13,894 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 03:40:13,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 03:40:13,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 03:40:13,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 03:40:13,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 03:40:13,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 03:40:13,895 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 03:40:13,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 03:40:13,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 03:40:13,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 03:40:13,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 03:40:13,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 03:40:13,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 03:40:13,896 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 03:40:13,896 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 03:40:13,896 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 03:40:13,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 03:40:13,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 03:40:13,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 03:40:13,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 03:40:13,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 03:40:13,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:40:13,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 03:40:13,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 03:40:13,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 03:40:13,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 03:40:13,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 03:40:13,897 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 03:40:13,897 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 03:40:13,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 03:40:13,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 03:40:13,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 03:40:13,898 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 03:40:13,898 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 03:40:14,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 03:40:14,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 03:40:14,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 03:40:14,096 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 03:40:14,099 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 03:40:14,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label50.c [2022-01-11 03:40:14,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01b66361e/37dc4c47c9824752adbdb1fde1ebedc9/FLAGa78fb6402 [2022-01-11 03:40:14,642 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 03:40:14,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label50.c [2022-01-11 03:40:14,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01b66361e/37dc4c47c9824752adbdb1fde1ebedc9/FLAGa78fb6402 [2022-01-11 03:40:15,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01b66361e/37dc4c47c9824752adbdb1fde1ebedc9 [2022-01-11 03:40:15,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 03:40:15,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 03:40:15,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 03:40:15,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 03:40:15,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 03:40:15,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:40:15" (1/1) ... [2022-01-11 03:40:15,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a02d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:15, skipping insertion in model container [2022-01-11 03:40:15,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:40:15" (1/1) ... [2022-01-11 03:40:15,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 03:40:15,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 03:40:15,641 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label50.c[55003,55016] [2022-01-11 03:40:15,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:40:15,681 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 03:40:15,843 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label50.c[55003,55016] [2022-01-11 03:40:15,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 03:40:15,871 INFO L208 MainTranslator]: Completed translation [2022-01-11 03:40:15,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:15 WrapperNode [2022-01-11 03:40:15,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 03:40:15,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 03:40:15,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 03:40:15,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 03:40:15,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:15" (1/1) ... [2022-01-11 03:40:15,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:15" (1/1) ... [2022-01-11 03:40:15,978 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2022-01-11 03:40:15,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 03:40:15,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 03:40:15,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 03:40:15,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 03:40:15,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:15" (1/1) ... [2022-01-11 03:40:15,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:15" (1/1) ... [2022-01-11 03:40:15,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:15" (1/1) ... [2022-01-11 03:40:15,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:15" (1/1) ... [2022-01-11 03:40:16,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:15" (1/1) ... [2022-01-11 03:40:16,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:15" (1/1) ... [2022-01-11 03:40:16,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:15" (1/1) ... [2022-01-11 03:40:16,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 03:40:16,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 03:40:16,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 03:40:16,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 03:40:16,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:15" (1/1) ... [2022-01-11 03:40:16,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 03:40:16,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:40:16,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 03:40:16,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 03:40:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 03:40:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 03:40:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 03:40:16,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 03:40:16,192 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 03:40:16,193 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 03:40:17,620 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 03:40:17,627 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 03:40:17,627 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 03:40:17,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:40:17 BoogieIcfgContainer [2022-01-11 03:40:17,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 03:40:17,629 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 03:40:17,629 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 03:40:17,630 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 03:40:17,632 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:40:17" (1/1) ... [2022-01-11 03:40:17,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:40:17 BasicIcfg [2022-01-11 03:40:17,976 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 03:40:17,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 03:40:17,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 03:40:17,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 03:40:17,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 03:40:15" (1/4) ... [2022-01-11 03:40:17,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40860c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:40:17, skipping insertion in model container [2022-01-11 03:40:17,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:40:15" (2/4) ... [2022-01-11 03:40:17,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40860c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:40:17, skipping insertion in model container [2022-01-11 03:40:17,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:40:17" (3/4) ... [2022-01-11 03:40:17,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40860c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 03:40:17, skipping insertion in model container [2022-01-11 03:40:17,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:40:17" (4/4) ... [2022-01-11 03:40:17,981 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label50.cTransformedIcfg [2022-01-11 03:40:17,984 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 03:40:17,984 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 03:40:18,023 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 03:40:18,029 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 03:40:18,029 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 03:40:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:18,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-11 03:40:18,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:18,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:18,058 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:18,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:18,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1227700695, now seen corresponding path program 1 times [2022-01-11 03:40:18,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:18,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041548602] [2022-01-11 03:40:18,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:18,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:18,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:18,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041548602] [2022-01-11 03:40:18,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041548602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:18,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:18,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:18,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210105178] [2022-01-11 03:40:18,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:18,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:18,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:18,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:18,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:18,649 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:19,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:19,933 INFO L93 Difference]: Finished difference Result 829 states and 1478 transitions. [2022-01-11 03:40:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:19,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-01-11 03:40:19,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:19,945 INFO L225 Difference]: With dead ends: 829 [2022-01-11 03:40:19,945 INFO L226 Difference]: Without dead ends: 463 [2022-01-11 03:40:19,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:19,950 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 137 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:19,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 129 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-11 03:40:19,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-01-11 03:40:19,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 449. [2022-01-11 03:40:19,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.6183035714285714) internal successors, (725), 448 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 725 transitions. [2022-01-11 03:40:19,994 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 725 transitions. Word has length 154 [2022-01-11 03:40:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:19,995 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 725 transitions. [2022-01-11 03:40:19,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:19,995 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 725 transitions. [2022-01-11 03:40:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 03:40:19,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:19,997 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:19,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 03:40:19,998 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:19,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:19,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1625164671, now seen corresponding path program 1 times [2022-01-11 03:40:19,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:19,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29550202] [2022-01-11 03:40:19,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:19,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:20,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:20,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29550202] [2022-01-11 03:40:20,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29550202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:20,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:20,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:20,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222661005] [2022-01-11 03:40:20,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:20,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:20,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:20,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:20,108 INFO L87 Difference]: Start difference. First operand 449 states and 725 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:20,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:20,473 INFO L93 Difference]: Finished difference Result 1333 states and 2157 transitions. [2022-01-11 03:40:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:20,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-01-11 03:40:20,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:20,479 INFO L225 Difference]: With dead ends: 1333 [2022-01-11 03:40:20,479 INFO L226 Difference]: Without dead ends: 886 [2022-01-11 03:40:20,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:20,481 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 360 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:20,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 555 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 03:40:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2022-01-11 03:40:20,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 884. [2022-01-11 03:40:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 1.6149490373725934) internal successors, (1426), 883 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:20,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1426 transitions. [2022-01-11 03:40:20,510 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1426 transitions. Word has length 159 [2022-01-11 03:40:20,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:20,511 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 1426 transitions. [2022-01-11 03:40:20,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:20,511 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1426 transitions. [2022-01-11 03:40:20,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-11 03:40:20,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:20,515 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:20,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 03:40:20,515 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:20,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:20,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1759980993, now seen corresponding path program 1 times [2022-01-11 03:40:20,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:20,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783665032] [2022-01-11 03:40:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:20,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:20,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:20,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783665032] [2022-01-11 03:40:20,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783665032] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:20,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:20,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:20,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875133516] [2022-01-11 03:40:20,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:20,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:20,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:20,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:20,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:20,748 INFO L87 Difference]: Start difference. First operand 884 states and 1426 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:21,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:21,635 INFO L93 Difference]: Finished difference Result 2599 states and 4206 transitions. [2022-01-11 03:40:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:21,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-01-11 03:40:21,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:21,647 INFO L225 Difference]: With dead ends: 2599 [2022-01-11 03:40:21,647 INFO L226 Difference]: Without dead ends: 1717 [2022-01-11 03:40:21,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:21,651 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 101 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:21,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 147 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:40:21,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2022-01-11 03:40:21,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1714. [2022-01-11 03:40:21,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1713 states have (on average 1.5107997664915354) internal successors, (2588), 1713 states have internal predecessors, (2588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:21,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2588 transitions. [2022-01-11 03:40:21,678 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2588 transitions. Word has length 161 [2022-01-11 03:40:21,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:21,679 INFO L470 AbstractCegarLoop]: Abstraction has 1714 states and 2588 transitions. [2022-01-11 03:40:21,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:21,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2588 transitions. [2022-01-11 03:40:21,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-11 03:40:21,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:21,682 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:21,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 03:40:21,682 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:21,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:21,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1592490323, now seen corresponding path program 1 times [2022-01-11 03:40:21,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:21,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305671087] [2022-01-11 03:40:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:21,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:21,784 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:21,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:21,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305671087] [2022-01-11 03:40:21,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305671087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:21,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:21,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:21,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433023133] [2022-01-11 03:40:21,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:21,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:21,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:21,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:21,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:21,787 INFO L87 Difference]: Start difference. First operand 1714 states and 2588 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:22,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:22,735 INFO L93 Difference]: Finished difference Result 5056 states and 7651 transitions. [2022-01-11 03:40:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:22,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-01-11 03:40:22,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:22,745 INFO L225 Difference]: With dead ends: 5056 [2022-01-11 03:40:22,745 INFO L226 Difference]: Without dead ends: 3344 [2022-01-11 03:40:22,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:22,749 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 223 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:22,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 167 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:40:22,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2022-01-11 03:40:22,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 3341. [2022-01-11 03:40:22,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3341 states, 3340 states have (on average 1.3637724550898203) internal successors, (4555), 3340 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:22,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3341 states to 3341 states and 4555 transitions. [2022-01-11 03:40:22,800 INFO L78 Accepts]: Start accepts. Automaton has 3341 states and 4555 transitions. Word has length 177 [2022-01-11 03:40:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:22,800 INFO L470 AbstractCegarLoop]: Abstraction has 3341 states and 4555 transitions. [2022-01-11 03:40:22,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:22,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3341 states and 4555 transitions. [2022-01-11 03:40:22,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-11 03:40:22,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:22,805 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:22,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 03:40:22,805 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:22,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:22,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1369673178, now seen corresponding path program 1 times [2022-01-11 03:40:22,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:22,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096671135] [2022-01-11 03:40:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:22,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-11 03:40:22,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:22,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096671135] [2022-01-11 03:40:22,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096671135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:22,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:22,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:22,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517540282] [2022-01-11 03:40:22,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:22,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:22,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:22,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:22,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:22,903 INFO L87 Difference]: Start difference. First operand 3341 states and 4555 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:23,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:23,360 INFO L93 Difference]: Finished difference Result 6629 states and 9039 transitions. [2022-01-11 03:40:23,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:23,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2022-01-11 03:40:23,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:23,369 INFO L225 Difference]: With dead ends: 6629 [2022-01-11 03:40:23,369 INFO L226 Difference]: Without dead ends: 3290 [2022-01-11 03:40:23,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:23,374 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 321 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:23,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 03:40:23,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2022-01-11 03:40:23,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3290. [2022-01-11 03:40:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3289 states have (on average 1.3201581027667983) internal successors, (4342), 3289 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 4342 transitions. [2022-01-11 03:40:23,425 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 4342 transitions. Word has length 189 [2022-01-11 03:40:23,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:23,426 INFO L470 AbstractCegarLoop]: Abstraction has 3290 states and 4342 transitions. [2022-01-11 03:40:23,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:23,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 4342 transitions. [2022-01-11 03:40:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-11 03:40:23,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:23,428 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:23,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 03:40:23,429 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:23,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:23,429 INFO L85 PathProgramCache]: Analyzing trace with hash -460791860, now seen corresponding path program 1 times [2022-01-11 03:40:23,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:23,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382657007] [2022-01-11 03:40:23,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:23,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:23,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:23,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382657007] [2022-01-11 03:40:23,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382657007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:23,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:23,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:23,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546881557] [2022-01-11 03:40:23,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:23,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:23,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:23,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:23,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:23,542 INFO L87 Difference]: Start difference. First operand 3290 states and 4342 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:24,385 INFO L93 Difference]: Finished difference Result 9829 states and 12976 transitions. [2022-01-11 03:40:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:24,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2022-01-11 03:40:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:24,403 INFO L225 Difference]: With dead ends: 9829 [2022-01-11 03:40:24,403 INFO L226 Difference]: Without dead ends: 6541 [2022-01-11 03:40:24,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:24,409 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 203 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:24,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 133 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:40:24,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6541 states. [2022-01-11 03:40:24,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6541 to 6539. [2022-01-11 03:40:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6539 states, 6538 states have (on average 1.283420006118079) internal successors, (8391), 6538 states have internal predecessors, (8391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:24,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6539 states to 6539 states and 8391 transitions. [2022-01-11 03:40:24,503 INFO L78 Accepts]: Start accepts. Automaton has 6539 states and 8391 transitions. Word has length 191 [2022-01-11 03:40:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:24,503 INFO L470 AbstractCegarLoop]: Abstraction has 6539 states and 8391 transitions. [2022-01-11 03:40:24,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:24,503 INFO L276 IsEmpty]: Start isEmpty. Operand 6539 states and 8391 transitions. [2022-01-11 03:40:24,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-11 03:40:24,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:24,507 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:24,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 03:40:24,507 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:24,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:24,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1106782397, now seen corresponding path program 1 times [2022-01-11 03:40:24,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:24,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37073542] [2022-01-11 03:40:24,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:24,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:24,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:24,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37073542] [2022-01-11 03:40:24,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37073542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:24,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:24,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:24,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136616195] [2022-01-11 03:40:24,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:24,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:40:24,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:24,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:40:24,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:24,679 INFO L87 Difference]: Start difference. First operand 6539 states and 8391 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:25,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:25,868 INFO L93 Difference]: Finished difference Result 21450 states and 27623 transitions. [2022-01-11 03:40:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:40:25,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-01-11 03:40:25,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:25,912 INFO L225 Difference]: With dead ends: 21450 [2022-01-11 03:40:25,913 INFO L226 Difference]: Without dead ends: 14913 [2022-01-11 03:40:25,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:25,926 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 523 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:25,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 484 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-11 03:40:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14913 states. [2022-01-11 03:40:26,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14913 to 14898. [2022-01-11 03:40:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14898 states, 14897 states have (on average 1.2750889440827011) internal successors, (18995), 14897 states have internal predecessors, (18995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14898 states to 14898 states and 18995 transitions. [2022-01-11 03:40:26,142 INFO L78 Accepts]: Start accepts. Automaton has 14898 states and 18995 transitions. Word has length 192 [2022-01-11 03:40:26,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:26,142 INFO L470 AbstractCegarLoop]: Abstraction has 14898 states and 18995 transitions. [2022-01-11 03:40:26,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:26,143 INFO L276 IsEmpty]: Start isEmpty. Operand 14898 states and 18995 transitions. [2022-01-11 03:40:26,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-01-11 03:40:26,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:26,147 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:26,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 03:40:26,147 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:26,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:26,148 INFO L85 PathProgramCache]: Analyzing trace with hash -141039046, now seen corresponding path program 1 times [2022-01-11 03:40:26,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:26,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918766007] [2022-01-11 03:40:26,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:26,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:26,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:26,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918766007] [2022-01-11 03:40:26,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918766007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:26,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:26,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:26,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131912432] [2022-01-11 03:40:26,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:26,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:26,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:26,321 INFO L87 Difference]: Start difference. First operand 14898 states and 18995 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:27,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:27,197 INFO L93 Difference]: Finished difference Result 35509 states and 44938 transitions. [2022-01-11 03:40:27,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:27,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2022-01-11 03:40:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:27,231 INFO L225 Difference]: With dead ends: 35509 [2022-01-11 03:40:27,232 INFO L226 Difference]: Without dead ends: 20613 [2022-01-11 03:40:27,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:27,248 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 196 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:27,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 69 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:40:27,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20613 states. [2022-01-11 03:40:27,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20613 to 20609. [2022-01-11 03:40:27,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20609 states, 20608 states have (on average 1.2492721273291925) internal successors, (25745), 20608 states have internal predecessors, (25745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20609 states to 20609 states and 25745 transitions. [2022-01-11 03:40:27,570 INFO L78 Accepts]: Start accepts. Automaton has 20609 states and 25745 transitions. Word has length 195 [2022-01-11 03:40:27,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:27,571 INFO L470 AbstractCegarLoop]: Abstraction has 20609 states and 25745 transitions. [2022-01-11 03:40:27,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:27,572 INFO L276 IsEmpty]: Start isEmpty. Operand 20609 states and 25745 transitions. [2022-01-11 03:40:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-11 03:40:27,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:27,579 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:27,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 03:40:27,580 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:27,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:27,580 INFO L85 PathProgramCache]: Analyzing trace with hash 649389778, now seen corresponding path program 1 times [2022-01-11 03:40:27,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:27,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841285366] [2022-01-11 03:40:27,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:27,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:27,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:27,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841285366] [2022-01-11 03:40:27,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841285366] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:40:27,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327536473] [2022-01-11 03:40:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:27,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:40:27,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:40:27,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:40:27,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 03:40:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:28,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 6117 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-11 03:40:28,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:40:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 03:40:28,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:40:28,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327536473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:28,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 03:40:28,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-11 03:40:28,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611256086] [2022-01-11 03:40:28,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:28,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:28,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:28,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:28,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:40:28,578 INFO L87 Difference]: Start difference. First operand 20609 states and 25745 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:29,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:29,453 INFO L93 Difference]: Finished difference Result 41220 states and 51496 transitions. [2022-01-11 03:40:29,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:29,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2022-01-11 03:40:29,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:29,479 INFO L225 Difference]: With dead ends: 41220 [2022-01-11 03:40:29,479 INFO L226 Difference]: Without dead ends: 20613 [2022-01-11 03:40:29,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 03:40:29,499 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 106 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:29,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 333 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:40:29,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20613 states. [2022-01-11 03:40:29,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20613 to 20609. [2022-01-11 03:40:29,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20609 states, 20608 states have (on average 1.1870632763975155) internal successors, (24463), 20608 states have internal predecessors, (24463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20609 states to 20609 states and 24463 transitions. [2022-01-11 03:40:29,734 INFO L78 Accepts]: Start accepts. Automaton has 20609 states and 24463 transitions. Word has length 202 [2022-01-11 03:40:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:29,735 INFO L470 AbstractCegarLoop]: Abstraction has 20609 states and 24463 transitions. [2022-01-11 03:40:29,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 20609 states and 24463 transitions. [2022-01-11 03:40:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-01-11 03:40:29,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:29,742 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:29,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 03:40:29,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:40:29,966 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:29,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:29,966 INFO L85 PathProgramCache]: Analyzing trace with hash -246008881, now seen corresponding path program 1 times [2022-01-11 03:40:29,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:29,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118982718] [2022-01-11 03:40:29,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:29,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 03:40:30,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:30,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118982718] [2022-01-11 03:40:30,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118982718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:30,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:30,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:30,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052321053] [2022-01-11 03:40:30,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:30,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:30,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:30,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:30,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:30,269 INFO L87 Difference]: Start difference. First operand 20609 states and 24463 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:31,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:31,216 INFO L93 Difference]: Finished difference Result 55861 states and 66078 transitions. [2022-01-11 03:40:31,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:31,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2022-01-11 03:40:31,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:31,259 INFO L225 Difference]: With dead ends: 55861 [2022-01-11 03:40:31,259 INFO L226 Difference]: Without dead ends: 35254 [2022-01-11 03:40:31,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:31,279 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 103 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:31,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 88 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:40:31,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35254 states. [2022-01-11 03:40:31,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35254 to 35246. [2022-01-11 03:40:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35246 states, 35245 states have (on average 1.1581784650305007) internal successors, (40820), 35245 states have internal predecessors, (40820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:31,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35246 states to 35246 states and 40820 transitions. [2022-01-11 03:40:31,705 INFO L78 Accepts]: Start accepts. Automaton has 35246 states and 40820 transitions. Word has length 228 [2022-01-11 03:40:31,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:31,706 INFO L470 AbstractCegarLoop]: Abstraction has 35246 states and 40820 transitions. [2022-01-11 03:40:31,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:31,706 INFO L276 IsEmpty]: Start isEmpty. Operand 35246 states and 40820 transitions. [2022-01-11 03:40:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-01-11 03:40:31,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:31,729 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:31,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 03:40:31,729 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:31,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1359875939, now seen corresponding path program 1 times [2022-01-11 03:40:31,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:31,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256136672] [2022-01-11 03:40:31,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:31,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-01-11 03:40:31,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:31,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256136672] [2022-01-11 03:40:31,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256136672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:31,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:31,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:31,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030454135] [2022-01-11 03:40:31,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:31,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:40:31,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:31,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:40:31,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:31,858 INFO L87 Difference]: Start difference. First operand 35246 states and 40820 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:33,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:33,194 INFO L93 Difference]: Finished difference Result 73338 states and 84716 transitions. [2022-01-11 03:40:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:40:33,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 334 [2022-01-11 03:40:33,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:33,243 INFO L225 Difference]: With dead ends: 73338 [2022-01-11 03:40:33,243 INFO L226 Difference]: Without dead ends: 38094 [2022-01-11 03:40:33,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:33,268 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 619 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:33,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 141 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-11 03:40:33,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38094 states. [2022-01-11 03:40:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38094 to 35652. [2022-01-11 03:40:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35652 states, 35651 states have (on average 1.1534038315895767) internal successors, (41120), 35651 states have internal predecessors, (41120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35652 states to 35652 states and 41120 transitions. [2022-01-11 03:40:33,799 INFO L78 Accepts]: Start accepts. Automaton has 35652 states and 41120 transitions. Word has length 334 [2022-01-11 03:40:33,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:33,799 INFO L470 AbstractCegarLoop]: Abstraction has 35652 states and 41120 transitions. [2022-01-11 03:40:33,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:33,799 INFO L276 IsEmpty]: Start isEmpty. Operand 35652 states and 41120 transitions. [2022-01-11 03:40:33,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-01-11 03:40:33,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:33,824 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:33,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 03:40:33,824 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:33,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:33,825 INFO L85 PathProgramCache]: Analyzing trace with hash -985974513, now seen corresponding path program 1 times [2022-01-11 03:40:33,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:33,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524289613] [2022-01-11 03:40:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:33,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-11 03:40:34,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:34,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524289613] [2022-01-11 03:40:34,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524289613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:34,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:34,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:34,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407494788] [2022-01-11 03:40:34,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:34,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:34,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:34,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:34,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:34,101 INFO L87 Difference]: Start difference. First operand 35652 states and 41120 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:35,058 INFO L93 Difference]: Finished difference Result 70492 states and 81254 transitions. [2022-01-11 03:40:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:35,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2022-01-11 03:40:35,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:35,101 INFO L225 Difference]: With dead ends: 70492 [2022-01-11 03:40:35,101 INFO L226 Difference]: Without dead ends: 34842 [2022-01-11 03:40:35,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:35,128 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 224 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:35,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 312 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 03:40:35,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34842 states. [2022-01-11 03:40:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34842 to 34430. [2022-01-11 03:40:35,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34430 states, 34429 states have (on average 1.1178947979900664) internal successors, (38488), 34429 states have internal predecessors, (38488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:35,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34430 states to 34430 states and 38488 transitions. [2022-01-11 03:40:35,546 INFO L78 Accepts]: Start accepts. Automaton has 34430 states and 38488 transitions. Word has length 338 [2022-01-11 03:40:35,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:35,546 INFO L470 AbstractCegarLoop]: Abstraction has 34430 states and 38488 transitions. [2022-01-11 03:40:35,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:35,547 INFO L276 IsEmpty]: Start isEmpty. Operand 34430 states and 38488 transitions. [2022-01-11 03:40:35,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-01-11 03:40:35,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:35,565 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:35,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 03:40:35,566 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:35,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash 753112853, now seen corresponding path program 1 times [2022-01-11 03:40:35,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:35,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639487412] [2022-01-11 03:40:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:35,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-01-11 03:40:35,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:35,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639487412] [2022-01-11 03:40:35,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639487412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:35,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:35,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 03:40:35,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678997891] [2022-01-11 03:40:35,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:35,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:35,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:35,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:35,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:35,841 INFO L87 Difference]: Start difference. First operand 34430 states and 38488 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:36,854 INFO L93 Difference]: Finished difference Result 83918 states and 93917 transitions. [2022-01-11 03:40:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:36,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 353 [2022-01-11 03:40:36,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:36,913 INFO L225 Difference]: With dead ends: 83918 [2022-01-11 03:40:36,913 INFO L226 Difference]: Without dead ends: 49490 [2022-01-11 03:40:36,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:36,926 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 156 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:36,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 162 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 03:40:36,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49490 states. [2022-01-11 03:40:37,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49490 to 40520. [2022-01-11 03:40:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40520 states, 40519 states have (on average 1.1189071793479601) internal successors, (45337), 40519 states have internal predecessors, (45337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:37,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40520 states to 40520 states and 45337 transitions. [2022-01-11 03:40:37,474 INFO L78 Accepts]: Start accepts. Automaton has 40520 states and 45337 transitions. Word has length 353 [2022-01-11 03:40:37,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:37,475 INFO L470 AbstractCegarLoop]: Abstraction has 40520 states and 45337 transitions. [2022-01-11 03:40:37,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:37,475 INFO L276 IsEmpty]: Start isEmpty. Operand 40520 states and 45337 transitions. [2022-01-11 03:40:37,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-01-11 03:40:37,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:37,496 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:37,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 03:40:37,496 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:37,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:37,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1130171185, now seen corresponding path program 1 times [2022-01-11 03:40:37,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:37,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409864276] [2022-01-11 03:40:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:37,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-11 03:40:37,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:37,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409864276] [2022-01-11 03:40:37,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409864276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:37,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:37,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:37,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876421428] [2022-01-11 03:40:37,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:37,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:40:37,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:37,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:40:37,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:37,949 INFO L87 Difference]: Start difference. First operand 40520 states and 45337 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:39,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:39,055 INFO L93 Difference]: Finished difference Result 88992 states and 99474 transitions. [2022-01-11 03:40:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:40:39,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 372 [2022-01-11 03:40:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:39,108 INFO L225 Difference]: With dead ends: 88992 [2022-01-11 03:40:39,109 INFO L226 Difference]: Without dead ends: 48474 [2022-01-11 03:40:39,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:40:39,124 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 181 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:39,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 341 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 03:40:39,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48474 states. [2022-01-11 03:40:39,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48474 to 46234. [2022-01-11 03:40:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46234 states, 46233 states have (on average 1.1202604200462873) internal successors, (51793), 46233 states have internal predecessors, (51793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46234 states to 46234 states and 51793 transitions. [2022-01-11 03:40:39,666 INFO L78 Accepts]: Start accepts. Automaton has 46234 states and 51793 transitions. Word has length 372 [2022-01-11 03:40:39,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:39,667 INFO L470 AbstractCegarLoop]: Abstraction has 46234 states and 51793 transitions. [2022-01-11 03:40:39,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 46234 states and 51793 transitions. [2022-01-11 03:40:39,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2022-01-11 03:40:39,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:39,687 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:39,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 03:40:39,687 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:39,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:39,688 INFO L85 PathProgramCache]: Analyzing trace with hash 290625302, now seen corresponding path program 1 times [2022-01-11 03:40:39,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:39,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529275555] [2022-01-11 03:40:39,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:39,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-01-11 03:40:39,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:39,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529275555] [2022-01-11 03:40:39,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529275555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:39,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:39,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:39,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048943568] [2022-01-11 03:40:39,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:39,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:40:39,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:39,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:40:39,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:39,913 INFO L87 Difference]: Start difference. First operand 46234 states and 51793 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:41,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:41,282 INFO L93 Difference]: Finished difference Result 94304 states and 105542 transitions. [2022-01-11 03:40:41,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:40:41,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 375 [2022-01-11 03:40:41,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:41,336 INFO L225 Difference]: With dead ends: 94304 [2022-01-11 03:40:41,336 INFO L226 Difference]: Without dead ends: 48072 [2022-01-11 03:40:41,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:41,369 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 422 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:41,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 462 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-11 03:40:41,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48072 states. [2022-01-11 03:40:41,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48072 to 48059. [2022-01-11 03:40:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48059 states, 48058 states have (on average 1.1083690540596778) internal successors, (53266), 48058 states have internal predecessors, (53266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48059 states to 48059 states and 53266 transitions. [2022-01-11 03:40:41,950 INFO L78 Accepts]: Start accepts. Automaton has 48059 states and 53266 transitions. Word has length 375 [2022-01-11 03:40:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:41,950 INFO L470 AbstractCegarLoop]: Abstraction has 48059 states and 53266 transitions. [2022-01-11 03:40:41,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:41,950 INFO L276 IsEmpty]: Start isEmpty. Operand 48059 states and 53266 transitions. [2022-01-11 03:40:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-01-11 03:40:42,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:42,158 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:42,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 03:40:42,158 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:42,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:42,158 INFO L85 PathProgramCache]: Analyzing trace with hash 426952297, now seen corresponding path program 1 times [2022-01-11 03:40:42,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:42,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049651899] [2022-01-11 03:40:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:42,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2022-01-11 03:40:42,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:42,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049651899] [2022-01-11 03:40:42,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049651899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:42,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:42,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:42,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191037135] [2022-01-11 03:40:42,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:42,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:40:42,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:42,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:40:42,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:42,319 INFO L87 Difference]: Start difference. First operand 48059 states and 53266 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:44,128 INFO L93 Difference]: Finished difference Result 171609 states and 189866 transitions. [2022-01-11 03:40:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:40:44,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 380 [2022-01-11 03:40:44,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:44,290 INFO L225 Difference]: With dead ends: 171609 [2022-01-11 03:40:44,290 INFO L226 Difference]: Without dead ends: 123552 [2022-01-11 03:40:44,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:44,468 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 861 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:44,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 69 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-11 03:40:44,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123552 states. [2022-01-11 03:40:45,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123552 to 123548. [2022-01-11 03:40:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123548 states, 123547 states have (on average 1.1043084817923543) internal successors, (136434), 123547 states have internal predecessors, (136434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123548 states to 123548 states and 136434 transitions. [2022-01-11 03:40:46,195 INFO L78 Accepts]: Start accepts. Automaton has 123548 states and 136434 transitions. Word has length 380 [2022-01-11 03:40:46,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:46,196 INFO L470 AbstractCegarLoop]: Abstraction has 123548 states and 136434 transitions. [2022-01-11 03:40:46,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 123548 states and 136434 transitions. [2022-01-11 03:40:46,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-01-11 03:40:46,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:46,239 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:46,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 03:40:46,240 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:46,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:46,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2040968702, now seen corresponding path program 1 times [2022-01-11 03:40:46,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:46,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970948087] [2022-01-11 03:40:46,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:46,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-01-11 03:40:46,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:46,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970948087] [2022-01-11 03:40:46,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970948087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:46,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:46,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:46,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656011863] [2022-01-11 03:40:46,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:46,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:40:46,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:46,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:40:46,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:46,423 INFO L87 Difference]: Start difference. First operand 123548 states and 136434 transitions. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:48,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:48,518 INFO L93 Difference]: Finished difference Result 257115 states and 284010 transitions. [2022-01-11 03:40:48,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:40:48,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 380 [2022-01-11 03:40:48,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:48,716 INFO L225 Difference]: With dead ends: 257115 [2022-01-11 03:40:48,717 INFO L226 Difference]: Without dead ends: 133569 [2022-01-11 03:40:48,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:48,779 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 343 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:48,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 84 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-11 03:40:49,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133569 states. [2022-01-11 03:40:50,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133569 to 130265. [2022-01-11 03:40:50,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130265 states, 130264 states have (on average 1.0993981453049193) internal successors, (143212), 130264 states have internal predecessors, (143212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:50,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130265 states to 130265 states and 143212 transitions. [2022-01-11 03:40:50,701 INFO L78 Accepts]: Start accepts. Automaton has 130265 states and 143212 transitions. Word has length 380 [2022-01-11 03:40:50,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:50,701 INFO L470 AbstractCegarLoop]: Abstraction has 130265 states and 143212 transitions. [2022-01-11 03:40:50,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:50,701 INFO L276 IsEmpty]: Start isEmpty. Operand 130265 states and 143212 transitions. [2022-01-11 03:40:50,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-01-11 03:40:50,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:50,727 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:50,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 03:40:50,727 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:50,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:50,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1885418656, now seen corresponding path program 1 times [2022-01-11 03:40:50,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:50,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379017852] [2022-01-11 03:40:50,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:50,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2022-01-11 03:40:51,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:51,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379017852] [2022-01-11 03:40:51,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379017852] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:51,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:51,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:40:51,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856255902] [2022-01-11 03:40:51,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:51,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:40:51,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:51,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:40:51,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:51,064 INFO L87 Difference]: Start difference. First operand 130265 states and 143212 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:52,841 INFO L93 Difference]: Finished difference Result 269270 states and 296169 transitions. [2022-01-11 03:40:52,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:40:52,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 386 [2022-01-11 03:40:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:53,060 INFO L225 Difference]: With dead ends: 269270 [2022-01-11 03:40:53,060 INFO L226 Difference]: Without dead ends: 139007 [2022-01-11 03:40:53,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:53,133 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 732 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:53,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 314 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 03:40:53,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139007 states. [2022-01-11 03:40:54,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139007 to 138994. [2022-01-11 03:40:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138994 states, 138993 states have (on average 1.0997100573410172) internal successors, (152852), 138993 states have internal predecessors, (152852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:55,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138994 states to 138994 states and 152852 transitions. [2022-01-11 03:40:55,220 INFO L78 Accepts]: Start accepts. Automaton has 138994 states and 152852 transitions. Word has length 386 [2022-01-11 03:40:55,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:55,220 INFO L470 AbstractCegarLoop]: Abstraction has 138994 states and 152852 transitions. [2022-01-11 03:40:55,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:55,220 INFO L276 IsEmpty]: Start isEmpty. Operand 138994 states and 152852 transitions. [2022-01-11 03:40:55,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-01-11 03:40:55,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:55,250 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:55,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 03:40:55,250 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:55,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:55,251 INFO L85 PathProgramCache]: Analyzing trace with hash -832502311, now seen corresponding path program 1 times [2022-01-11 03:40:55,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:55,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813560582] [2022-01-11 03:40:55,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:55,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:40:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:40:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-11 03:40:55,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:40:55,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813560582] [2022-01-11 03:40:55,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813560582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:40:55,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:40:55,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 03:40:55,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177413852] [2022-01-11 03:40:55,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:40:55,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:40:55,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:40:55,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:40:55,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:55,701 INFO L87 Difference]: Start difference. First operand 138994 states and 152852 transitions. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:57,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:40:57,480 INFO L93 Difference]: Finished difference Result 278004 states and 305732 transitions. [2022-01-11 03:40:57,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:40:57,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 408 [2022-01-11 03:40:57,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:40:57,837 INFO L225 Difference]: With dead ends: 278004 [2022-01-11 03:40:57,837 INFO L226 Difference]: Without dead ends: 139012 [2022-01-11 03:40:57,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:40:57,894 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 250 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-11 03:40:57,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 138 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-11 03:40:57,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139012 states. [2022-01-11 03:40:59,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139012 to 138994. [2022-01-11 03:40:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138994 states, 138993 states have (on average 1.089723942932378) internal successors, (151464), 138993 states have internal predecessors, (151464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:59,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138994 states to 138994 states and 151464 transitions. [2022-01-11 03:40:59,837 INFO L78 Accepts]: Start accepts. Automaton has 138994 states and 151464 transitions. Word has length 408 [2022-01-11 03:40:59,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:40:59,837 INFO L470 AbstractCegarLoop]: Abstraction has 138994 states and 151464 transitions. [2022-01-11 03:40:59,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:40:59,837 INFO L276 IsEmpty]: Start isEmpty. Operand 138994 states and 151464 transitions. [2022-01-11 03:40:59,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-01-11 03:40:59,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:40:59,864 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:40:59,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 03:40:59,865 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:40:59,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:40:59,865 INFO L85 PathProgramCache]: Analyzing trace with hash 329650661, now seen corresponding path program 1 times [2022-01-11 03:40:59,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:40:59,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032183817] [2022-01-11 03:40:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:40:59,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:41:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:41:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 364 proven. 43 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-11 03:41:00,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:41:00,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032183817] [2022-01-11 03:41:00,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032183817] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 03:41:00,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365630099] [2022-01-11 03:41:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:41:00,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 03:41:00,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 03:41:00,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 03:41:00,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 03:41:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:41:01,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 12595 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-11 03:41:01,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 03:41:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-01-11 03:41:02,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 03:41:02,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365630099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:41:02,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 03:41:02,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-01-11 03:41:02,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378870010] [2022-01-11 03:41:02,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:41:02,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:41:02,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:41:02,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:41:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-11 03:41:02,025 INFO L87 Difference]: Start difference. First operand 138994 states and 151464 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:41:03,455 INFO L93 Difference]: Finished difference Result 306226 states and 332578 transitions. [2022-01-11 03:41:03,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:41:03,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 415 [2022-01-11 03:41:03,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:41:03,680 INFO L225 Difference]: With dead ends: 306226 [2022-01-11 03:41:03,680 INFO L226 Difference]: Without dead ends: 167234 [2022-01-11 03:41:03,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-11 03:41:03,921 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 65 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 03:41:03,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 367 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 03:41:04,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167234 states. [2022-01-11 03:41:05,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167234 to 158685. [2022-01-11 03:41:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158685 states, 158684 states have (on average 1.0823397443976708) internal successors, (171750), 158684 states have internal predecessors, (171750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158685 states to 158685 states and 171750 transitions. [2022-01-11 03:41:06,184 INFO L78 Accepts]: Start accepts. Automaton has 158685 states and 171750 transitions. Word has length 415 [2022-01-11 03:41:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:41:06,185 INFO L470 AbstractCegarLoop]: Abstraction has 158685 states and 171750 transitions. [2022-01-11 03:41:06,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:06,185 INFO L276 IsEmpty]: Start isEmpty. Operand 158685 states and 171750 transitions. [2022-01-11 03:41:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-01-11 03:41:06,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:41:06,220 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:41:06,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-11 03:41:06,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-01-11 03:41:06,422 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:41:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:41:06,422 INFO L85 PathProgramCache]: Analyzing trace with hash 426622551, now seen corresponding path program 1 times [2022-01-11 03:41:06,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:41:06,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719445036] [2022-01-11 03:41:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:41:06,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:41:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:41:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 03:41:06,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:41:06,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719445036] [2022-01-11 03:41:06,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719445036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:41:06,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:41:06,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 03:41:06,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060149673] [2022-01-11 03:41:06,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:41:06,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 03:41:06,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:41:06,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 03:41:06,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:41:06,725 INFO L87 Difference]: Start difference. First operand 158685 states and 171750 transitions. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:08,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:41:08,710 INFO L93 Difference]: Finished difference Result 255989 states and 276987 transitions. [2022-01-11 03:41:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 03:41:08,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 421 [2022-01-11 03:41:08,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:41:08,842 INFO L225 Difference]: With dead ends: 255989 [2022-01-11 03:41:08,843 INFO L226 Difference]: Without dead ends: 89998 [2022-01-11 03:41:08,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 03:41:08,880 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 325 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-11 03:41:08,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 89 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-11 03:41:08,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89998 states. [2022-01-11 03:41:10,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89998 to 77551. [2022-01-11 03:41:10,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77551 states, 77550 states have (on average 1.0593294648613798) internal successors, (82151), 77550 states have internal predecessors, (82151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77551 states to 77551 states and 82151 transitions. [2022-01-11 03:41:10,197 INFO L78 Accepts]: Start accepts. Automaton has 77551 states and 82151 transitions. Word has length 421 [2022-01-11 03:41:10,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:41:10,197 INFO L470 AbstractCegarLoop]: Abstraction has 77551 states and 82151 transitions. [2022-01-11 03:41:10,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:10,197 INFO L276 IsEmpty]: Start isEmpty. Operand 77551 states and 82151 transitions. [2022-01-11 03:41:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-01-11 03:41:10,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:41:10,214 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:41:10,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 03:41:10,214 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:41:10,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:41:10,215 INFO L85 PathProgramCache]: Analyzing trace with hash -650472557, now seen corresponding path program 1 times [2022-01-11 03:41:10,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:41:10,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370817628] [2022-01-11 03:41:10,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:41:10,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 03:41:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 03:41:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-01-11 03:41:10,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 03:41:10,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370817628] [2022-01-11 03:41:10,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370817628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 03:41:10,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 03:41:10,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 03:41:10,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750358766] [2022-01-11 03:41:10,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 03:41:10,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 03:41:10,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 03:41:10,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 03:41:10,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:41:10,719 INFO L87 Difference]: Start difference. First operand 77551 states and 82151 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 03:41:11,733 INFO L93 Difference]: Finished difference Result 153895 states and 163029 transitions. [2022-01-11 03:41:11,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 03:41:11,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 451 [2022-01-11 03:41:11,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 03:41:11,833 INFO L225 Difference]: With dead ends: 153895 [2022-01-11 03:41:11,833 INFO L226 Difference]: Without dead ends: 76346 [2022-01-11 03:41:11,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 03:41:11,863 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 106 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 03:41:11,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 273 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 03:41:11,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76346 states. [2022-01-11 03:41:12,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76346 to 74709. [2022-01-11 03:41:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74709 states, 74708 states have (on average 1.0561787224929058) internal successors, (78905), 74708 states have internal predecessors, (78905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:12,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74709 states to 74709 states and 78905 transitions. [2022-01-11 03:41:12,996 INFO L78 Accepts]: Start accepts. Automaton has 74709 states and 78905 transitions. Word has length 451 [2022-01-11 03:41:12,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 03:41:12,996 INFO L470 AbstractCegarLoop]: Abstraction has 74709 states and 78905 transitions. [2022-01-11 03:41:12,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 03:41:12,997 INFO L276 IsEmpty]: Start isEmpty. Operand 74709 states and 78905 transitions. [2022-01-11 03:41:13,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2022-01-11 03:41:13,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 03:41:13,015 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 03:41:13,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 03:41:13,015 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 03:41:13,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 03:41:13,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1650645736, now seen corresponding path program 1 times [2022-01-11 03:41:13,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 03:41:13,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669257621] [2022-01-11 03:41:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 03:41:13,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms